Effectively reducing climate change requires marked, global behavior change. However, it is unclear which strategies are most likely to motivate people to change their climate beliefs and behaviors. Here, we tested 11 expert-crowdsourced interventions on four climate mitigation outcomes: beliefs, policy support, information sharing intention, and an effortful tree-planting behavioral task. Across 59,440 participants from 63 countries, the interventions’ effectiveness was small, largely limited to nonclimate skeptics, and differed across outcomes: Beliefs were strengthened mostly by decreasing psychological distance (by 2.3%), policy support by writing a letter to a future-generation member (2.6%), information sharing by negative emotion induction (12.1%), and no intervention increased the more effortful behavior—several interventions even reduced tree planting. Last, the effects of each intervention differed depending on people’s initial climate beliefs. These findings suggest that the impact of behavioral climate interventions varies across audiences and target behaviors.

This meta-analysis investigated relationships between self-compassion and 1) physical health and 2) health-promoting behaviour in a large pooled sample (N = 29,588) sourced from 94 peer-reviewed articles. As hypothesised, omnibus analyses revealed positive associations between self-compassion and both physical health (r = .18) and health behaviour (r = .26). Moderation analyses using 290 effects found that both associations varied according to health domain, participant age, intervention duration, and self-compassion measure. Self-compassion predicted outcomes in most health domains, with the strongest effects observed on global physical health, functional immunity, composite health behaviour, sleep, and danger avoidance. It did not predict frailty, maladaptive bodily routines, and substance abuse. Multi-session interventions designed to boost self-compassion predicted increased physical health and health behaviour, thereby supporting causal links between self-compassion and health outcomes. The effects of single-session inductions were non-significant. The mean effect of self-compassion on physical health was non-significant for young participants (12.00 to 19.99) and its effect on health behaviour was weakest among older participants (40.00+). Results support the proposition that self-compassion can promote better physical health. Practical implications of these findings are discussed.